Effects of Long-Term Grazing on Feed Intake and Digestibility of Cattle in Meadow Steppe

Hou L. Xin X. Shen B. Qin Q. Altome A.I.A. Hamed Y.M.Z. Yan R. Nurlan S. Adilbek N. Balzhan A. Kussainova M. Amarjargal A. Fang W. Pulatov A. Zhou W. Sun H.
July 2023 Multidisciplinary Digital Publishing Institute (MDPI)

Agronomy
2023 #13 Issue 7

(1) Estimation of grazing livestock intake is the basis for studying animal–plant relationships and the nutritional status of grazing livestock and has important implications for grassland composition and productivity. (2) We used the saturated alkanes method to determine the feed intake and vegetation nutrient digestibility of livestock at different grazing intensities and in different months. (3) We found that C₃₁ had the highest concentration in both pasture and fecal output, and the average recovery of C₃₁ was 77.99%. The different grazing intensities significantly affected livestock intake. As the grazing intensity increased, there was a decreasing trend of livestock intake and the highest livestock feed intake was 6.11 kg DM/day in light grazing. With the increase in grazing season months, the highest livestock intake was 6.67 kg DM/day in the cold period in September. The month also had a significant effect on the digestibility of livestock for all nutrient variables when compared to the grazing intensity. Livestock weight and medium palatability species are more important for livestock intake. (4) Our study provides a more accurate measurement of grazing livestock intake, which can be used as a reference for the scientific management of grazing livestock and the rational use of grazing pastures.

cattle , grassland , grazing intensity , herbage intake and digestibility

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National Hulunbuir Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
Agricultural Research Corporation, Wad Madani, 126, Sudan
S. Seifullin Kazakh Agro Technical University, Astana, 010000, Kazakhstan
LLP “Scientific and Production Center of Grain Farming Named after A.I. Barayev”, Akmola, 021600, Kazakhstan
Sustainable Agriculture Center, Kazakh National Agrarian Research University, Almaty, 050010, Kazakhstan
University of the Humanities, P.O. Box 210646/53, Ulaanbaatar, Mongolia
Department of Biology, Pace University, New York, 10038, NY, United States
EcoGIS Center, «Tashkent Institute of Irrigation and Agricultural Mechanization Engineers» National Research University (TIIAME NRU), Tashkent, 100000, Uzbekistan
School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 150081, China

National Hulunbuir Grassland Ecosystem Observation and Research Station
Agricultural Research Corporation
S. Seifullin Kazakh Agro Technical University
LLP “Scientific and Production Center of Grain Farming Named after A.I. Barayev”
Sustainable Agriculture Center
University of the Humanities
Department of Biology
EcoGIS Center
School of Ecology
Northeast Institute of Geography and Agroecology

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